There are some excellent options for international flights:
You might find cheap flights with Ryanair to Tampere. Ryanair bus will come from Tampere to Helsinki on Friday night with a price of 25 euros.
Transport in Helsinki
Please inform the organizers about your arrival and departure times and accommodations. Public Transport system in the Helsinki Metropolitan Area is one of the best in Europe.
We traditionally help foreign players also by offering transport help by car. Especially on Sunday, if there is a tight schedule to the airport. However it depends on the needs, and can't be guaranteed to all at this point. More information from Competition manager.